(redirected from Platelets)
Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.
Related to Platelets: Neutrophils, low platelets, White blood cells


see blood clottingblood clotting,
process by which the blood coagulates to form solid masses, or clots. In minor injuries, small oval bodies called platelets, or thrombocytes, tend to collect and form plugs in blood vessel openings.
..... Click the link for more information.



(also thrombocyte), a formed element found in the blood of vertebrate animals and man that plays an important role in blood coagulation. The platelets of vertebrate animals (except mammals) are small ovoid cells with a solid nucleus and weakly basophilic cytoplasm. In mammals, including man, platelets are anuclear bodies 2–5 µ in diameter. The platelets normally number about 250,000–350,000 per cubic mm of blood. They have granules containing serotonin and substances involved in blood coagulation, as well as mitochondria, microtubules, glycogen granules, and sometimes ribosomes. In mammals, platelets originate in the blood-forming organs when fragments of the cytoplasm of megakaryocytes separate from the megakaryocytes. The life-span of the platelets of mammals, including man, is about five to nine days.


Markosian, A. A. Fiziologiia trombotsitov. Leningrad, 1970.


A small ice crystal which, when united with other such crystals, forms a layer of floating ice, especially sea ice, and serves as seed crystals for further thickening of the ice cover.


a minute cell occurring in the blood of vertebrates and involved in clotting of the blood
References in periodicals archive ?
The device will support drug development and scale platelet production," added senior study author Joseph Italiano from division of haematology at BWH.
By being able to develop a device that successfully models bone marrow represents a crucial bridge connecting our understanding of the physiological triggers of platelet formation to support drug development and scale platelet production," said senior study author Joseph Italiano, Jr.
CELL-DYN Sapphire calculates MPV from the volume histogram of the platelets as measured in the impedance channel, taking the log-normal distribution into account.
First, repeat samples and samples with platelet-related flags (such as suspected platelets clumps and discrepancy between the impedance and optical platelet counts) were removed from the data set; 8638 samples remained.
A cost-benefit analysis was performed by multiplying the total number of platelets transfused during the study period by the percentage of pooled platelets transfused during the control period from the previous year.
During the control period, 443 units of platelets were transfused on oncology floors, and 55 (12.
Since increases in immature platelets are associated with higher MPV, multiple studies have clearly demonstrated the clinical value of this parameter to discriminate low production from increased destruction of platelets as causes of thrombocytopenia.
New technologies have been introduced recently which rely on fluorescence methods to recognize reticulated immature platelets and thus determine the cause of thrombocytopenia.
Washed platelets were prepared and suspended in the Tyrode/HEPES solution (pH 7.
It is important to know that platelet clumping in the blood collection tube is totally innocent.
a] receptors are expressed, fibrinogen is able to bind to receptors on adjacent platelets (Figure 1).